Mateo Company produces and sells tablets. The company incurred the following costs for the month of May:

Advertising cost for monthly television ads $ $4,400$

Attachable keyboard $18,400$

Insurance for delivery truck $440$

Factory supervisor's salary $3,200$

Marketing manager's salary $2,900$

Assembly worker wages $17,000$

Miscellaneous soldering material used to seal case $700$

Hourly wages for factory security guard $1,850$

CEO's salary $6,700$

Speakers $4,850$